US3439491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making core spun yarns
Assignee: Monsanto Co
•
Filing: 1965-08-09
•
Granted: 1969-04-22
•
Expires: 1985-08-09
Abstract
No abstract record available.
Inventors
- 👤 Jack G Scruggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:46
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/36; D01; D01D; D01D5/00; D01D5/28; D01D5/30; D01D5/34; D02G3/40; D02G3/408; Y; Y10; Y10S; Y10S264/00; Y10S264/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1990337A
Cited
US2131598A
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US2208897A
Cited
US2241405A
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US2411559A
Cited
US2902820A
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US3009309A
Cited
US2997837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |